Sökning: "partial substitute."

Visar resultat 1 - 5 av 9 uppsatser innehållade orden partial substitute..

  1. 1. Mikroproportionering av cement : För minskning av koldioxidutsläpp

    Uppsats för yrkesexamina på grundnivå, Högskolan i Halmstad/Akademin för företagande, innovation och hållbarhet

    Författare :Ahmad Haj Hamido; Majd Eddin Salem; [2023]
    Nyckelord :limestone; concrete; strength; partial substitute.; kalksten; betong; tryckhållfasthet; ersättning för cement.;

    Sammanfattning : This study has investigated the effect of replacing limestone with different percentages of limestone powder (5%, 10% and 15%) using the T KS method on the compressive strength of the mortar. The results have shown that the compressive strength of the mortar has decreased with curing time (at day 14) and with an increase in the proportion of limestone powder, contrary to what has been expected. LÄS MER

  3. 2. Beetle Diversity – Land Sparing or Land Sharing? : the effects of timber extraction and restoration method on saproxylic beetle assemblages in mature managed pine forests

    Kandidat-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Ella Amnéus; Sebastian Hjelström; [2023]
    Nyckelord :Saproxylic Beetles; Ecological Restoration; Deadwood; Biodiversity; Boreal Forest; Fire Ecology; Land-sparing; Land-sharing; Conservation Management;

    Sammanfattning : The impoverishment of saproxylic beetle communities is a growing concern for management of boreal forest biodiversity. Past research has found active restoration methods, such as creating deadwood and conducting prescribed burnings, to have a short-term positive effect on the species richness and compositional diversity of saproxylic beetle assemblages. LÄS MER

  4. 3. Use of Polyvinyl chloride (PVC) as an aggregate for concrete

    Master-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Habib Loubani; [2023]
    Nyckelord :Polyvinyl chloride; PVC aggregates; natural aggregate concrete; PVC fine aggregates concrete; PVC coarse aggregates concrete;

    Sammanfattning : This study investigates the use of polyvinyl chloride (PVC) as a partial substitute of natural aggregates in concrete as fine and coarse aggregates. Concrete was prepared by replacing natural aggregates with equal volume of grinded PVC, with volume replacement ratio as 10%, 50% for fine and then 10% and 50% for coarse aggregates. LÄS MER

  5. 4. Mikroproportionering av kompletterande cementbaserade material

    Uppsats för yrkesexamina på grundnivå, Högskolan i Halmstad

    Författare :Nour Al Haboub; Abd Algani Ali; [2022]
    Nyckelord :limestone; concrete; strength; partial substitute.; kalksten; betong; tryckhållfasthet; ersättning för cement.;

    Sammanfattning : This study will deal with a new type of concrete that focuses on cement particles. As you alreadyknow today, concrete is one of the most used materials in the world, and the negative is that it has acontributing factor to pollution with as much as 5% of global carbon dioxide pollution. LÄS MER

  7. 5. Baking volume of wheat flour : assessment of novel analyses and parameters in prediction

    Master-uppsats, SLU/Department of Molecular Sciences

    Författare :Assar Sundholm; [2021]
    Nyckelord :baking volume; wheat flour; Alveolab; SDmatic; SRC 2;

    Sammanfattning : In the milling industry baking volume is used as the gold standard for wheat flour quality. Determination of baking volume is a time-consuming and blunt method, demanding a quicker and more precise substitute. The aim of this thesis was to assess how different rheological and chemical parameters affect baking volume. LÄS MER